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rdos/kernel/main.asm

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NASM
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Change kernel blob format to be option rom compatible
2019-04-20 23:02:35 +02:00
cpu 8086
Work on interrupt subfunctions, remove drvtab experiments
2019-09-08 17:18:37 +02:00
Test with easier to implement EQU syntax
2019-10-15 22:19:55 +02:00
self: equ 0xF000
diskbuf: equ (self-0x200) ; deblocking
stack: equ (diskbuf) ; grows down
defdrv: equ 4
WIP on loading files from disk
2019-09-29 23:25:29 +02:00
Throw DOS api away, re-layout memory to fit CP/M model
2019-09-29 10:52:00 +02:00
org self
jmp init
Test with easier to implement EQU syntax
2019-10-15 22:19:55 +02:00
pad 3
self_offset:
db (self >> 8)
Add basic 21h functions
2019-09-06 00:24:39 +02:00
Throw DOS api away, re-layout memory to fit CP/M model
2019-09-29 10:52:00 +02:00
banner:
Implement CP/M basic char io
2019-10-08 21:53:41 +02:00
db "RDOS 2019-09", 0x0A, 0x0D, '$', 0
Add attempt for drive table to kernel
2019-09-19 22:02:16 +02:00
Rework interrupt handling, realign stuff for relative jumps
2019-09-10 23:38:52 +02:00
init:
Throw DOS api away, re-layout memory to fit CP/M model
2019-09-29 10:52:00 +02:00
mov sp, stack
Test with easier to implement EQU syntax
2019-10-15 22:19:55 +02:00
mov byte [defdrv], 0x01
Work on interrupt subfunctions, remove drvtab experiments
2019-09-08 17:18:37 +02:00
Implement CP/M basic char io
2019-10-08 21:53:41 +02:00
mov dx, banner
call print_string
Implement FCB parsing in kernel
2019-09-29 14:23:39 +02:00
Another attempt at implementing a block layer
2019-10-20 11:56:27 +02:00
call disk_parm_init
Move out console interfacing into separate file
2019-10-20 21:11:44 +02:00
mov dx, 0x7F
mov byte [0x7F], 0x7F
mov byte [0x80], 2
call read_buffer
int3
Rework interrupt handling, realign stuff for relative jumps
2019-09-10 23:38:52 +02:00
cli
.halt:
hlt
jmp .halt
Add basic 21h functions
2019-09-06 00:24:39 +02:00
Implement FCB parsing in kernel
2019-09-29 14:23:39 +02:00
init_program:
db "HELLO.COM", 0
Move out console interfacing into separate file
2019-10-20 21:11:44 +02:00
; helper function for idle loops
idle:
pushf
sti
hlt
popf
Throw DOS api away, re-layout memory to fit CP/M model
2019-09-29 10:52:00 +02:00
ret
Move out console interfacing into separate file
2019-10-20 21:11:44 +02:00
%include "syscall.asm"
%include "con86.asm"
Throw DOS api away, re-layout memory to fit CP/M model
2019-09-29 10:52:00 +02:00
Implement FCB parsing in kernel
2019-09-29 14:23:39 +02:00
%include "exec.asm"
Meh
2019-10-16 23:09:31 +02:00
%include "fdc.asm"
Implement FCB parsing in kernel
2019-09-29 14:23:39 +02:00
%include "fcb.asm"
WIP on FCB disk i/o
2019-10-08 19:54:39 +02:00
%include "fcbparse.asm"
Move out console interfacing into separate file
2019-10-20 21:11:44 +02:00
Another attempt at implementing a block layer
2019-10-20 11:56:27 +02:00
%include "disk.asm"
Move out console interfacing into separate file
2019-10-20 21:11:44 +02:00
WIP on FCB disk i/o
2019-10-08 19:54:39 +02:00
%include "log2.asm"
Advance on FCB disk i/o
2019-10-12 20:33:26 +02:00
%include "dump.asm"